<template>
  <div class='xtx-goods-page' v-if="goods">
    <div class="container">
      <!-- 面包屑 -->
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <XtxBreadItem :to="'/category/' + goods.categories[0].id">{{ goods.categories[0].name }}</XtxBreadItem>
        <XtxBreadItem :to="'/category/sub/' + goods.categories[1].id">{{ goods.categories[1].name }}</XtxBreadItem>
        <XtxBreadItem>{{ goods.name }}</XtxBreadItem>
      </XtxBread>
      <!-- 商品信息 -->
      <div class="goods-info">
        <div class="media">
          <GoodsImage :images="goods.mainPictures" />
          <GoodsSales />
        </div>
        <div class="spec">
          <!-- 名字区组件 -->
          <GoodsName :goods="goods" />
          <!-- 规格组件 SKU -->
          <GoodsSku :goods="goods" @changeSku="changeSku" />
          <!-- <XtxNumbox :modelValue="num" @update:modelValue = 'changeValue' /> -->
          <XtxNumbox v-model="num" :max="goods.inventory" :min="1" label="数量" />
          <!-- 购物车 -->
          <XtxButton @click="insertCart" type="primary" style="margin-top:20px;">加入购物车</XtxButton>

        </div>
      </div>
      <!-- 商品推荐 -->
      <GoodsRelevant :goodsId="goods.id" />
      <!-- 商品详情 -->
      <div class="goods-footer">
        <div class="goods-article">
          <!-- 商品+评价 -->
          <GoodsTabs />
          <!-- 注意事项 -->
          <div class="goods-warn">
            <GoodsWarn />
          </div>
        </div>
        <!-- 24热榜+专题推荐 -->
        <div class="goods-aside">
          <GoodsHot :type="1" />
          <GoodsHot :type="2" />
        </div>
      </div>
    </div>
  </div>
</template>
  
<script>
import GoodsRelevant from './components/goods-relevant'
import GoodsImage from './components/goods-image.vue'
import GoodsSales from './components/goods-sales.vue'
import GoodsName from './components/goods-name.vue'
import GoodsSku from './components/goods-sku.vue'
import GoodsTabs from './components/goods-tabs.vue'
import GoodsHot from './components/goods-hot.vue'
import GoodsWarn from './components/goods-warn.vue'
import { nextTick, ref, watch, provide,getCurrentInstance } from 'vue'
import { findGoods } from '@/api/product'
import { useRoute } from 'vue-router'
import { useStore } from 'vuex'
export default {
  name: 'XtxGoodsPage',
  components: { GoodsRelevant, GoodsImage, GoodsSales, GoodsName, GoodsSku, GoodsTabs, GoodsHot, GoodsWarn },
  setup() {
    const goods = useGoods()
    //数量选择组件
    const num = ref(1)
    // sku改变时候触发
    const changeSku = (sku) => {
      if (sku.skuId) {
        goods.value.price = sku.price
        goods.value.oldPrice = sku.oldPrice
        goods.value.inventory = sku.inventory
        goods.value.specsText = sku.specsText
        currSku.value = sku
      }else {
        sku.value = null
      }
    }
    const currSku = ref(null)
    const instance = getCurrentInstance()
    const store = useStore()
    const insertCart = () => {
      if (!currSku.value) {
        return instance.proxy.$message({type:'warn',text:'请选择商品规格'})
      }
      if (num.value > goods.inventory) {
        return instance.proxy.$message({type:'error',text:'库存不足'})
      }
      store.dispatch('cart/insertCart', {
        id: goods.value.id,
        skuId: currSku.value.skuId,
        name: goods.value.name,
        picture: goods.value.mainPictures[0],
        price: currSku.value.price,
        nowPrice: currSku.value.price,
        count: num.value,
        attrsText: currSku.value.specsText,
        selected: true,
        isEffective: true,
        stock: currSku.value.inventory
      }).then(() => {
        instance.proxy.$message({type:'success',text:'加入购物车成功'})
      })
    }
    return { goods, changeSku, num, insertCart }
  }
}
// 获取商品详情
const useGoods = () => {
  const route = useRoute()
  const goods = ref(null)
  watch(() => route.params.id, (newVal) => {
    if (newVal && `/product/${newVal}` === route.path) {
      findGoods(route.params.id).then(data => {
        goods.value = null
        // console.log(data)
        nextTick(() => {
          goods.value = data.result
        })
      })
    }
  }, { immediate: true })
  //git test
  provide('goods', goods)

  return goods
}
</script>
  
<style scoped lang='less'>
.goods-info {
  min-height: 600px;
  background: #fff;
  display: flex;

  .media {
    width: 580px;
    height: 600px;
    padding: 30px 50px;
  }

  .spec {
    flex: 1;
    padding: 30px 30px 30px 0;
  }
}

.goods-footer {
  display: flex;
  margin-top: 20px;

  .goods-article {
    width: 940px;
    margin-right: 20px;
  }

  .goods-aside {
    width: 280px;
    min-height: 1000px;
  }
}

.goods-tabs {
  min-height: 600px;
  background: #fff;
}

.goods-warn {
  min-height: 600px;
  background: #fff;
  margin-top: 20px;
}
</style>